20486280

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{79}}^1\times {\mathrm{2161}}^1$

素因数の和:2254

約数の個数: 64

約数和(自身を含む): 62265600

約数和(自身を除く): 41779320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 79, 120, 158, 237, 316, 395, 474, 632, 790, 948, 1185, 1580, 1896, 2161, 2370, 3160, 4322, 4740, 6483, 8644, 9480, 10805, 12966, 17288, 21610, 25932, 32415, 43220, 51864, 64830, 86440, 129660, 170719, 259320, 341438, 512157, 682876, 853595, 1024314, 1365752, 1707190, 2048628, 2560785, 3414380, 4097256, 5121570, 6828760, 10243140, 20486280]

約数ペア:

[(1, 20486280), (2, 10243140), (3, 6828760), (4, 5121570), (5, 4097256), (6, 3414380), (8, 2560785), (10, 2048628), (12, 1707190), (15, 1365752), (20, 1024314), (24, 853595), (30, 682876), (40, 512157), (60, 341438), (79, 259320), (120, 170719), (158, 129660), (237, 86440), (316, 64830), (395, 51864), (474, 43220), (632, 32415), (790, 25932), (948, 21610), (1185, 17288), (1580, 12966), (1896, 10805), (2161, 9480), (2370, 8644), (3160, 6483), (4322, 4740)]